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US 4,047,565 AGranted
Well tool
AssigneeOtis Engineering Corporation
InventorCharles D. Crickmer
Life of this patent
Estimating the term…
Abstract
A well tool and more particularly a hanger assembly having an improved design for more effectively, reliably and economically hanging a liner or other well equipment in a well casing or the like.
Claims15
A well tool for suspending well equipment in a well, the well tool comprising:
- an elongated hanger mandrel;
- a plurality of cones axially spaced on said mandrel;
- a plurality of sets of slips axially spaced around said mandrel, each set of slips including a plurality of slips circumferentially spaced around said mandrel and positioned with respect to a different one of said cones to engage said one cone upon relative axial movement between the set of slips and the cone;
- a plurality of elongated slip reins circumferentially spaced around said mandrel for controlling alignment of said slips during relative axial movement between the set of slips and the cones, each slip rein being secured to a of slip from a plurality of said sets of slips and each slip rein controlling the alignment of each slip to which it is secured.
1 more element
A well tool for suspending well equipment in a well, the well tool comprising:
- an elongated hanger mandrel;
- a plurality of cones axially spaced on said mandrel;
- a plurality of sets of slips axially spaced around said mandrel, each set of slips including a plurality of slips circumferentially spaced around said mandrel and each set of slips being positioned with respect to a different one of said cones and adapted to engage said one cone upon relative movement between the set of slips and the cone;
- a plurality of elongated slip reins circumferentially spaced around said mandrel, each slip rein being secured to a slip from a plurality of said sets of slips;
- annular rein housing means on said mandrel in communication with said reins;
- and
- spring means associated with said annular rein housing means for urging said reins radially inwardly with respect to said mandrel.
4 more elements
A well tool for supporting well equipment in a well, the well tool comprising:
- an elongated hanger mandrel;
- at least one tapered cone on said mandrel;
- at least one set of slips spaced around said mandrel, including a plurality of slips circumferentially spaced around said mandrel and positioned to engage said cone upon relative axial movement between the set of slips and the cone;
- elongated rein means for supporting each slip around said mandrel, said rein means extending substantially parallel to the longitudinal axis of said mandrel during the entire extent of relative axial movement between the set of slips and the cone and extending beyond both axial limits of said set of slips;
- annular rein housing means on said mandrel and in communication with one axial end portion of said rein means;
- spring means in said housing means for urging said rein means radially inwardly with respect to said mandrel.
3 more elements
A well tool for suspending well equipment in a well, the well tool comprising:
- an elongated hanger mandrel;
- at least one tapered cone on said mandrel;
- at least one set of slips including a plurality of slips circumferentially spaced around said mandrel and positioned to engage said cone upon relative axial movement between said set of slips and said cone;
- elongated rein means for supporting each slip around said mandrel, said rein means movable radially outwardly with respect to said mandrel and extending substantially parallel to the longitudinal axis of said mandrel during the entire extent of relative axial movement between the set of slips and the cone.
1 more element
Dependencies are inferred from the claim text.